Answer:
Core samples are cylindrical pieces of earth that are extracted from the ground in order to study the composition of the earth below the surface.
An ice sheet is a mass of ice that blankets land for thousands of years.
Chemical analysis of core samples for ice sheets can provide information about climate conditions in the past. For example, analysis of the ratios of different isotopes of oxygen can reveal information about past sea surface temperatures.
Explanation:
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Snakes have traces of leglike structures that are not used for movement. Which inference is supported by this fact? Why?
A. Snakes do not have ancestors.
B. Snakes are an example of transitional fossils.
C. Snakes share a common ancestor with animals that have legs.
D. Snakes and animals that have legs are part of the same species.
Answer:
B
Explanation:
Because a transitional fossil any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.
Like a bubble
I move around the cell
Carrying goods and proteins as well.
What am I?
Answer:
A Golgi Apparatus
Explanation:
How do molecules like O2, CO2, and small hydrophobic molecules cross cell membranes?
Answer: Simple Diffusion Across the Cell (Plasma) Membrane
Explanation:
pretty much the structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
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What are the best, most accurate description for “agonal respirations”
The best, most accurate description for “agonal respirations” are abnormal breathing characterized by gasping process, myoclonus and grunting.
What is agonal respiration?
Agonal respiration is a form of abnormal breathing that originate from the brain stem which is a part of autonomic nervous system and it is characterized by a gasping process that lead to labored breath when the body is in too much stress or distress.
Therefore, The best, most accurate description for “agonal respirations” are abnormal breathing characterized by gasping process, myoclonus and grunting.
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How is vCJD different? Where does it originate from?
vCJD is stands for Variant Creutzfeld- Jakob Disease and it is originated from France and it was caused due to consumption of contaminated beef.
What is vCJD ?vCJD is stands for Variant Creutzfeld- Jakob Disease and it is originated from France and it was caused due to consumption of contaminated beef. The main reason which is responsible for vCJD is eating rotten beef and this will lead to cause vCJD.
Due to this reason the beef which was imported from Britain was banned in France and other European states.The most dangerous thing about CJD was that it passes from one generation to other generation due to mutation in gene.
Therefore,vCJD is stands for Variant Creutzfeld- Jakob Disease and it is originated from France and it was caused due to consumption of contaminated beef.
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Select the correct answer.
How does air pollution impact crops?
OA.
О в.
O C.
O D.
Air pollution has no impact on crops.
Air pollution causes plants to produce less.
Air pollution kills many types of plants.
Air pollution takes nutrients from the soil.
According to Mendelian genetics, what phenotypic outcome do you expect
in the progeny when you cross a heterozygote (Aa) with a homozygous
dominant individual (AA)?
* 1 point
75% will have the dominant phenotype, 25% will have the recessive phenotype
will ha
25% will have the dominant phenotype, 75% will have the recessive phenotype
50% will have the dominant phenotype, 50% will have the recessive phenotype
All individuals will have the dominant phenotype
25% will have the dominant phenotype, and 75% will have the recessive phenotype.
When purebred or homozygous individuals that differ in a particular trait are mated, all offspring will be heterozygous for that trait. If the trait is inherited as dominant and recessive, all F1 offspring exhibit the same phenotype as the parent homozygous for the dominant trait. Monohybrid matings have a dominant to recessive phenotype ratio of 3:1.
In complete dominance, there is no phenotypic difference between AA and Aa individuals. In imperfect dominance, the phenotype of heterozygous individuals is clearly less intense than that of homozygous individuals for the dominant allele, such that the AA and Aa genotypes produce different phenotypes. A cross of two F1 hybrids that are heterozygous for a single trait that exhibits imperfect dominance.
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What
happens to the fat
you "burn off"
during exercise?
How does food
make us gain
weight?
Answer:
by working out and it expands out stomach
Explanation:
Which of these is a true null hypothesis
Here, a true null hypothesis is option B. Age has no effect on math ability.
According to the null hypothesis, the two variables under investigation have no relationship (one variable does not affect the other).A null hypothesis is a statement that is believed to be true in statistics unless it can be proven false beyond a reasonable doubt. The rationale behind this is that the null hypothesis typically believes that the population contains no novel or unexpected information.The null hypothesis and alternative hypothesis are significant because they roughly describe the phenomenon, which is their goal. The intention is to offer a relational statement that will be directly tested in a research study to the researcher or investigator.Hence, option B is the correct answer.
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Hi can someone help me with this. So I kind of struggling here because I tried multiple answers for both and it still says that its wrong. And Im not really sure on what to put here...
Any logical answers?
1. Redi tested the hypothesis by conducting the meat-jar experiment.
2. His conclusion would be that maggots do not come from meat.
Testing hypothesesHypotheses are tentative statements that are yet to be tested whether they are true or not.
In science, hypotheses are tested using well-designed experiments.
The belief that living things can come from non-living objects is known as spontaneous generation. It was a widely held belief for a long time until experiments are performed to prove otherwise.
Francesco Redi was able to test the hypothesis by conducting the meat-jar experiment. Many believe that maggots spontaneously come from meats.
By observing flies laying eggs on the meat in the uncovered jar, the notion that meats spontaneously give rise to maggots was totally dispelled. The eggs hatch to give rise to maggots.
Redi's conclusion would be that flies give birth to maggots through their eggs. Meats do not spontaneously give rise to maggots.
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Identify 2 reasons why more vehicles do not use hydrogen fuel.
Answer:
Storage of hydrogen fuel cells is much more complicated and expensive than other fuel types. This adds to the overall costs of products and raises prices for automakers. The fuel cell can be dangerous due to its highly flammable nature.
Explanation:
Proteins function to provide structure for tissues and organs. Which of the following are the building blocks of proteins?
Answer:
The answer is D.
Explanation:
Option A shows the structure of a lipid, option B shows the structure of a carbohydrate, and option C shows the structure of a nucleic acid. This leaves the only possible answer to be D.
I'm learning this in school too, it's difficult, I know. Good luck and study hard!
Nerve cells can form many branches. How does this relate to their function?
A) they need a shape that allows them to hook onto structures
B) they need a large surface area
C) they form networks with other nerve cells
An electrically excitable cell known as a nerve cell uses synapses, which are specialized connections, to communicate with other cells. With the exception of sponges and placozoa, the neuron is the primary element of nervous tissue in all animals.
Plants and fungus are examples of non-animals that lack nerve cells. Dendrites are the many, brief branching found on nerve cells. Depending on the sort of cell it is affiliated with, dendrites may branch extensively. The axon of another nerve sends electrical signals to dendrites. The cell body or a portion of it is then where it accumulates before transmission. The quantity, branching, and placement of the dendrites or projections that make up a nerve cell, collectively known as arborization, determine the structure of the nerve cell. Their ability to communicate with their environment and other nerve cells or neurons, as well as their responsibilities in computation, are determined by this.
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true of false : factors like an organism’s habitat conditions and behavior can affect variation within a population .
Rank Smallest to biggest atom, molecule, proton, atomic nucleus, electron, neutron, cellular nucleus, cell
The correct order from smallest to biggest size is as follows:
electron < proton = neutron < atomic nucleus < atom < molecule < cellular nucleus < cell
Electrons are the smallest in size with a -1 charge orbiting around the nucleus of an atom which consist of protons and neutrons. Protons and neutrons are approximately similar in size and mass which is greater than that of an electron. Electrons, protons and neutrons are the three fundamental sub-atomic particles. Then comes atomic nucleus which is made up of protons and neutrons followed by an atom which is the most basic unit of matter. Molecules are made up of atoms. When at least two atoms are bound together by one or more chemical bonds, a molecule is formed. Macromolecules, or huge molecules that are created through polymerization like DNA, are a common type of biologically significant molecule. In cells, DNA is contained inside the nucleus. Organelles are collections of macromolecules seen in some cells that are encased in membranes like chloroplasts and mitochondria. Cell organelles along with the cell nucleus and cytoplasm make up a cell, which is the largest in size in the given example.
Thus, the correct order (from smallest to biggest size) is electron < proton = neutron < atomic nucleus < atom < molecule < cellular nucleus < cell
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Determine the stimulus, receptor, control center response, and effector for gas exchange in plants
PLEASE HELP ME ITS URGENTTTTTTTT
Answer:
The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.
Stomata (the receptors of gas exchange process) are tiny holes found in the underside of leaves. They control water loss and gas exchange by opening and closing. They allow water vapour and oxygen out of the leaf and carbon dioxide into the leaf. In low light the guard cells lose water and become flaccid, causing the stomata to close.
Stomata, which are microscopic pores on leaves and stems that act as receptors in gas exchange, are common in plants.
Stimulation, which is caused by things like light and the environment, demands gas exchange. The plant's internal regulatory system, the control center, initiates the opening or closing of the stomata. The effectors, the guard cells, regulate the size of stomatal pores to facilitate this response. When under stress, the stomata close to prevent water loss and open to allow the entry of carbon dioxide for photosynthesis. By absorbing carbon dioxide and releasing oxygen during photosynthesis, this exchange enables plants to maintain a stable water balance by controlling transpiration.
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Where is Earth's older, denser, and thicker crust located on the seafloor?
A. the furthest away from the center of mid-ocean ridges
B. near the center of mid-ocean ridges
C. near continents
D. the bottom of ocean trenches
The Earth's older, denser, and thicker crust located on the seafloor is the the furthest away from the center of mid-ocean ridges and is denoted as option A.
What is Earth crust?
This is referred to as the outermost layer of the terrestrial planet and consists of young and old ones depending on their location from the mid-ocean ridges.
The Earth's older, denser, and thicker crust located on the seafloor is the the furthest away from the center of mid-ocean ridges and is located around subduction zones and continental shelves while the young and less dense crust are closer which is therefore the reason why option A was chosen as the correct choice.
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The creation of polymers from monomers is known as
Responses
hydrolysis
hydrolysis
ionic bonding
ionic bonding
condensation (dehydration synthesis)
condensation (dehydration synthesis)
hydrogen bonding
(c) Condensation or dehydration synthesis is the process of producing polymers from monomers.
The majority of macromolecules are created by fusing together tiny molecules known as monomers. These are the single-unit molecules that unite to form polymers; the term literally means "single unit" (because "mono" implies "one"). Polymers are simply chains of monomers, to put it simply. Given that meaning of "poly" is "many," this makes logical.
Both monomers and polymers have the ability to combine to form larger structures known as polymers. Our bodies experience particular reactions as a result of this.
While the process of hydrolysis divides polymers into monomers, dehydration processes are those that join monomers together to produce polymers.
The correct option is (c) condensation( dehydration synthesis).
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The complete question is mentioned below:
The creation of polymers from monomers is known as
(a) hydrolysis
(b) ionic bonding
(c) condensation (dehydration synthesis)
(d) hydrogen bonding
Urgently!! I have test tomorrow!! I Need To Know!!
Which organelle generates energy for the cell (Powerhouse)?
Answer:
Mitochondria is the powerhouse of the cell
Explanation:
Mitochondria are known as the “powerhouse of the cell.” The organelle that is responsible for the production of energy in a cell is the mitochondria. This is the most vital part of the cell as it takes the food and makes energy for the other parts of the cell.
Mitochondria play host to one of the most important processes in your body, called cellular respiration. Taking in glucose and oxygen, mitochondria produce energy, which they capture and package as energy-rich molecules of ATP.
I hope its helpful•••
Answer:
Mitochondrion
Explanation:
Mitochondrion generates ATP which is necessary for our body as it uses this energy to perform bodily functions.
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Velocity is...
The change of an objects mass
The change of an object's position
The change of an object's position over a period of time
The change of an object's speed
Answer: is C or D I think
the speed of something in a given direction.
"the velocities of the emitted particles"
Explanation:
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In the defense mechanism known as _____, the ego refuses to acknowledge anxiety-producing realities.
In the defense mechanism known as the denial mechanism, the ego refuses to acknowledge anxiety-producing realities.
What is the denial defense mechanism?The denial defense mechanism can be defined as an unconscious mechanism by which a person may ignore the fasts in the real world in order to avoid excessive levels of stress that may be harmful to his / her health and being, therefore, a part of a defensive strategy from external stimuli.
In conclusion, in the defense mechanism known as the denial mechanism, the ego refuses to acknowledge anxiety-producing realities.
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Suppose you want to investigate whether the type of music
students listen to while studying can affect their test
scores.
Which statement represents a valid hypothesis about music and studying?
OA. If you listen to calming music while you study, then you are more
likely to feel calm during the test.
B. Does the type of music played while studying affect test
performance?
C. Students who listen to music with faster beats while studying
perform better on tests.
D. Most people prefer pop or jazz music when studying for a test.
Answer: C because it is a testable hypothesis. For instance you could only listen to one genre for a term and another for the next term and then compare your scores.
Explanation: A is incorrect because you can not test a feeling like how calm you are.
What amount of fertilizer in the soil produces the tallest flower
The independent variable is the amount of fertilizer, the dependent variable is the height of the flower, and the controlled variable might be the level of water.
What is the independent variable?The independent variable is those variable that doesn't change in the experiment, the dependent variable is modified by the independent variable and the controlled variable is the same for all treatments.
In conclusion, the independent variable is the amount of fertilizer, the dependent variable is the height of the flower, and the controlled variable might be the level of water.
Complete question:
Find the independent variable, dependent variable, and controlled variable in the experiment: What amount of fertilizer in the soil produces the tallest flower.
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The top three organelles are______, ______ and _______ because they do _____________, ___________ and ___________
In a cell there are mainly 6 organelles: nucleus, mitochondria, chloroplasts, golgi apparatus, endoplasmic reticulum and ribosomes.
Out of these the top 3 cell organelles are nucleus, mitochondria and golgi apparatus because they are the source of all other cell components and they have crucial functions:
Nucleus: The storage of the DNA or the inherited material of the cell is one of the nucleus' two main jobs. It is in charge of organizing a variety of crucial cellular processes, including protein synthesis, cell division, growth, and a number of other crucial operations.
Golgi apparatus: Proteins obtained from the ER are further processed and sorted in the Golgi apparatus, or Golgi complex, where they are eventually transported to lysosomes, the plasma membrane, or secretion. As was already mentioned, the Golgi also produces sphingomyelin and glycolipids.
Mitochondria: The majority of the chemical energy required to drive a cell's metabolic operations is produced by mitochondria, which are membrane-bound cell organelles (mitochondrion, singular). Adenosine triphosphate, a tiny molecule, serves as a storage container for the chemical energy generated by the mitochondria.
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A diagram of the solar system shows the sun in the middle. Why does every other object orbit around the sun?
• The sun is smaller than other objects in the solar system.
O The sun is an average size for a star.
O The sun is so bright.
O The sun is the most massive object in the solar system.
Every other object revolves around the Sun because the Sun is the most massive object in the Solar System. Therefore, the correct option is D.
The Sun's powerful gravitational pull causes every other object in the Solar System to revolve around it. The force that controls how celestial bodies move through space is called gravity. All the planets, moons, asteroids and comets in the Solar System are under the strong gravitational pull of the Sun due to their enormous mass.
As a result these objects are constantly pulled towards the Sun, due to which they revolve around it. As we know, the Solar System was formed by the interaction of the gravitational force of the Sun and the forward motion of these bodies, which keeps them in stable orbits.
Therefore, the correct option is D.
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Which organelle is responsible for packaging and secreting/removing substances in a cell (Mail-room)?
Answer:
Golgi apparatus
Explanation:
responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations. As the secretory proteins move through the Golgi apparatus, a number of chemical modifications may transpire.
In the following explanation, which two body systems are working together to help maintain balanced blood sugar levels?
When sugar levels in your bloodstream drop, your pancreas releases a hormone called glucagon. This makes your liver break down the glycogen into glucose which can then make its way into your cells where it can be used for cellular respiration.
Question 3 options:
Circulatory and Integumentary Systems
Muscular and Skeletal Systems
Endocrine and Circulatory Systems
Skin and Respiratory Systems
The two body systems are working together to help maintain balanced blood sugar levels are endocrine and circulatory systems and is denoted as option C.
What is Endocrine system?This type of system comprises of organs which are referred to as glands and secrete hormones which are required for metabolic reactions in the body system.
The pancreas is an organ which secretes the hormone known as insulin which is responsible in the regulation of sugar level in the blood. The insulin produced is then distributed to target areas through the circulatory system which is why option C was chosen.
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A decrease in the functionality of this structure in a cell would directly decrease the ability of the cell to exchange materials with its environment to maintain homeostasis.
A Structure 10
B Structure 3
C Structure 7
D Structure 1
Answer: A. Structure 10
Explanation: An intact and functional cell membrane is needed in order for cells to maintain homeostasis. All exchanging of materials has to occur through this structure.
Help which of these multiple choices are correct?
Answer:
D
Explanation:
Halophilic archaebacteria (haloarchaea) thrive in environments with salt concentrations approaching saturation, such as natural brines, the Dead Sea, alkaline salt lakes and marine solar salterns; they have also been isolated from rock salt of great geological age (195–250 million years).
not described as haloarchea therefore not b
Archaebacteria are a group of microorganisms considered to be an ancient form of life that evolved separately from the bacteria and blue-green algae, and they are sometimes classified as a kingdom.
therefore d
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Which is the final electron acceptor in the electron transport chain of cellular respiration?
NADH
FADH2
oxygen
carbon dioxide
Answer:
It is none other than Oxygen.
Explanation: